Comment by CarolineW

Submitted many times, some of which have comments:

https://news.ycombinator.com/item?id=12441608 (2 comments)

https://news.ycombinator.com/item?id=12440870

https://news.ycombinator.com/item?id=12434777

https://news.ycombinator.com/item?id=12434348 (1 comment)

Those who say they've read it say it's worth it.